NxStage Medical: Analyst Coverage

Firm	Analyst
Canaccord Adams	William J. Plovanic
Capstone	John Putnam
Feltl	Matt J. Weight
Jefferies	Raj Denhoy
JP Morgan	Kim Gallium
Lazard	Sean Lavin
Leerink Swann	Danielle Antalfy
Rodman	Suraj Kalra
Stephens	Chris Cooley
Wachovia	Gary Lieberman
William Blair & Company	Benjamin Andrew

NxStage Medical, Inc. is followed by the analyst(s) listed above. Please note that any opinions, estimates or forecasts regarding NxStage Medical, Inc.'s performance made by these analysts are theirs alone and do not represent opinions, forecasts or predictions of NxStage Medical, Inc. or its management. NxStage Medical, Inc. does not by its reference above or distribution imply its endorsement of or concurrence with such information, conclusions or recommendations.